William h



w; H. H. SIS'UM. Metal Shaping Machine. No 237,059. Q Patented Jan. 25,1881.

WILLIAM -H. H. SISUM, OF BROOKLYN, NEW YORK.

.S-PECIFICATIQNfor-ming part of Letters Patent-No. 237,059, dated January 25,1881. Applibation filed February 16, 1850.

To all whom it may concern Be it known that I, WILLIAM H..H. SIsUM,

of Brooklyn, Kings county, State of New York, have invented certain new and useful Improvements relating to Metal-Shapin g Machines, of which the following is a' specification.

The .tool is carried on a stout slide moved by a screw acting on a nut connected to the? slide. Atroughis provided,in whichoilismain tained of such depth that the nut ispartly immersed in it, and as it.,1noves backward and forward it raises an accumulation or wave of oil sufficiently high to lubricate the screw threads. The screw is turned smaller atthe bearing, and is mounted in a close-fitting hole,

the lower part of which is sutficiently above the level of the oil to avoid leakage. The feed mechanism for moving the table which holds the article to be planed may. feed either way. It is actuated in either direction during the period while the slide is atthe inward extreme of its motion.

The inner edge of the table is covered by a fixed shield, so that noehips or other foreign matter can fall upon the table-bearings.

.The accompanying drawings form a part of this specification, and represent what 1 consider the best means of carrying out the invention. v

.Figure 1 is a side elevation, witha .portion broken away to show the interior. Fig. 2 is a cross-section of .the upper portion.

-The-drawin gs represent the novel parts, with so much of the ordinary parts as is necessary to show their relation thereto.

Similar letters of reference indicate like parts in both the figures.

A is a casting, having a trough-like interior and a broad base, which latter is bolted firmly upon a supporting-frame, A.

B is a longand stout slidingpieceorramrunning in grooves in the interior of the casting A, and held tightly by a strip, A adjusted by screws a M. This slide carries on its overhanging outer end a tool-head of any suitable kind (not represented) for carrying the tool to eifect the planing. Near the other end, on the under side, are a pair of jaws, B, between which is held a nut, O, which latter is free to rise and. sink within small limits to allow for slight imperfections in the screw or in other parts.

D is a long screw, threaded as represented, to engage with the nut C, but passing loosely ,through the jaws B B. The screw D has a 4 small bearingat the front en d, and also a small ,hearing, d, near the back end, which latter fits in a corresponding small hole in the cast- Ying. Beyond this is a third bearing with an adjusting-screw, E, with jam-nut for holding f the screw effectually against end play.

Two fast pulleys, D D, and corresponding loose pulleys alongside receive respectively open and cross belts from a counter-shaft. (Not represented.) They give a slow outward and a quick return ,motion, as will be readily understood.

G and H are adjustable dogs, embracing a dovetail slide, 1), extending along the side of the main slide or ram B and cast in one piece therewith. They may be set firmly in any required position longitudinally by means of the pinching-screws G H. each having a steel shoe. (Not shown.) The dog G has a groove with a reverse curve,as shown by g. The dog H has an inclined surface, as shown by h.

A is a rigid extension from the trough A,

which supports the pivot i of a bell-crank lever, I. Thelower arm of this lever carries a pin, '5, which extends inward, and as theslide B reoiprocates is brought in contact alternately first with the incline h to throw the up- .per arm of I forward, and then with the incline g todepress the pin 13 and throw the up- ,perarm of I backward.

J is a rod pivoted to the lever I, and extending horizontally therefrom to a pin, it, on a belt-shiftin g slide, K, indistinctly shown. This belt-shifter is preferably of the construction set forth in my patent for belt-shifter, reissued June 22, 1875, No. 6,496. It shifts the open and cross belts respectively upon their fast and loose pulleys, to induce the easy and prompt change of rotation of the screw D, as will be understood.

The extension A supports also a short shaft, L, which has two arms, L L, one behind the other. The farthest arm, L has a pin, 1 which at the proper time is received in the slot 9 in the dog G, and at the end of the return motion of the ram B partially rotates the shaft L,

thereby raising the slotted arm L. To the latter is attached, by the adjustable pivot l, a rod, 0. At each approach of the ram B to the rear end of its motion the groove 9 receives the pin 1 and elevates the rod 0. Simultaneously with the completion of this movement the belts (not represented) are shitted by the action of the lever I, and the ram B commences its outward motion, which induces an immediate depression of the pin 1, and consequently of the rod 0, to its original position. The elevation and depression of the rod 0 succeed each other almost instantaneously.

W is a strong front piece, adjustable up and down by stout screws, (not represented,) in a manner well known. It is formed with locking-slides w it, which receive closely-fitting cheeks from the table X, and allow the latter, which, it will be understood, carries the work, to be fed across the machine, subject to the control of an endless screw, Y, which is supported in bearings in the piece \V and turned by a gear-wheel, Y, as will presently appear.

The rod 0 is connected, by an adjustable pivot, o, to the slotted arm P, fixed on a shaft, P. This shaft 1 carries another arm, P which is connected by a pivot, r, to a double pawl, R, which engages in a toothed wheel, S, which is mounted loosely on the shaft P. As the pawl R now stands it will turn the wheel S in one direction-that indicated by the arrow, to the left-at each reciprocation ot' the ram B. On turning over the pawl It on its pivot r it will engage in the other direction, and at each reciprocation of the slide or ram B will turn the wheel S in the other direction-that is, to the right.

According as the pawl R is adjusted in the position shown or the opposite, it will turn the Wheel S, and consequently feed the table X and the work bolted thereon in one direction or the other; but whatever the direction, the movement will be effected during the period while the ram is at or very near the back end of its motion.

Z is a plate bolted on the upper edge of the casting \V and extending out partially over the table X, and forming a shield over the up per surface thereof. Any chips of iron or other material falling or lying on this part of the machine are by this means excluded from the joint.

The screw D has an outer bearing on the rigid frame-work at the point d so that the strain of the belts on the pulleys D D cannot induce any vibration. The thrust of the screw D in performing the work is received on a small axial screw. E, which is firmly held in the fixed framing by the aid of a jam-nut, e.

The ram B embraces the nut 0 between jaws B, having parallel, or very nearly parallel, internal faces. It follows that the efl'ect of the screw is transmitted very directly to the ram to compel the proper endwise motion, while the ram can at any time be lifted clear of the machine by the disconnection of the jaws B from the nut C. It is only necessary to liberate and remove the strip A to allow the ram to be lifted.

The pins i and l are made with steel ends.

I claim as my invention- 1. In a metal-planer. the dog G, having the groove g, mounted adjustably on the reciprocating ram B, in combination therewith and with the lever L L L rod 0, lever P P P, reversible pawl 1t, toothed wheel S, and table X, and screw Y for moving or feeding the work, whereby the work may be fed in either direc' tion at one end of the stroke, as herein specified.

2. In a metal-planing mill having the long deep trough A, the combination of the ram B, having the jaws B, and the endless screw D, having the nut C fitted between the jaws B, all being mounted in the said trough A, as and for the purpose set forth.

3. In a metal-planer, the jaws B on the ram B, in combination with a separate nut, C, on the screw 1), adapted to serve as herein specitied.

4. In a metal-planing machine, the covering-plate Z, in combination with the front piece, W, work-table X, and endless screw Y, arranged to protect the joint between the worktable and the supporting-slide, as herein specifled.

In testimony whereof I have hereunto set my hand, at New York city, in the State of New York, this 13th day of February, 1880, in the presence of two subscribing witnesses.

WM. H. H. SISUM. Witnesses:

WM. 0. DEY, CHARLES C. STETSON. 

